This is another claim that makes no sense.
How does the list maker claim an "appearance of an ordinary man" when Y'shayahu / Isaiah 52:14 says "His appearance is too marred to be a man's and his visage (appearance) to be human"
So which is it list make -- appearance of an ordinary man, or an appearance that is too marred to be a man's?
Y'shayahu / Isaiah 53:2 does not say the servant has the appearance of an ordinary man . Quite the opposite. It says "he had neither form nor grandeur; we saw him, but without such visage that we could desire him."
In other words, Isaiah is saying the opposite of the missionary claim for this passage.
The exact opposite.
As a result the passage the list maker points to as proof that Jesus fits does the reverse. Philippians 2:8 says "found in appearance as a man" whereas Y'shayahu / Isaiah 53:2 says "he had neither form nor grandeur; we saw him, but without such visage that we could desire him."
Even the King James Version (a Christian translation) has "he hath no form nor comeliness; and when we shall see him, there is no beauty that we should desire him" for Isaiah 53:2.
This is not the appearance of an average man!
Sometimes I wonder if the list maker himself (herself?) ever bothered to check the claims!
Here is the Artscroll Stone Edition translation along with their footnotes at the bottom of each response to aid in your understanding of the passage.
Isaiah 52:13 Behold, My servant will succeed; he will be exalted and become high and exceedingly lofty.
14 Just as multitudes were astonished over you (saying) "His appearance is too marred to be a man's, and his visage to be human,
15 so will the many nations exclaim about him, and kings will shut their mouths (in amazement) for they will see that which had never been told to them, and will perceive things they had never heard.
53:1 Who would believe what we have heard! For whom has the arm of HaShem been revealed?
2 Formerly he grew like a sapling or like the root from arid ground; he had neither form nor grandeur; we saw him, but without such visage that we could desire him.
3 He was despised and isolated from men, a man of pains and accustomed to illness. As one from whom we would hide our faces; he was despise and we had no regard for him.
4 But in truth it was our ills that he bore, and our pains that he carried -- but we had regarded him diseased, stricken by G-d and afflicted!
5 He was pained because of our rebellious sins and oppressed through our iniquities; the chastisement upon him was for our benefit, and through his wounds we were healed.
6 We have all strayed like sheep each of us turning his own way and HaShem inflicted upon him the iniquity of us all.
7 He was persecuted and afflicted but did not open his mouth; like a sheep being led to the slaughter or a ewe that is silent before her shearers, he did not open his mouth.
8 Now that he has been released from captivity and judgment who could have imagined such a generation? For he had been removed from the land of the living, an affliction upon them that was my people's sin.
9 He submitted himself to his grave like wicked men; and the wealthy (submitted) to his executions for committing no crime and with no deceit in his mouth.
10 HaShem desired to oppress him and He afflicted him; if his soul would acknowledge guilt he would see offspring and live long days and the desire or HaShem would succeed in his hand.
11. He would see (the purpose) and be satisfied with his soul's distress. With his knowledge My servant will vindicate the Righteous One to multitudes; it is their iniquities that he will carry.
12. Therefore, I will assign him a portion from the multitudes and he will divide the mighty as spoils -- in return for having poured out his soul for death and being counted among the wicked, for he bore the sin of the multitudes, and prayed for the wicked.
Isaiah 52:13 i.e. G-d's servant the people of Israel (Rashi)
52:15 Just as Israel had once been astonishingly degraded, so it will astonish the nations by its exaltedness when the time of redemption arrives.
53:1-3 this is the prophecy foretelling what the nations and their kings will exclaim when they witness Israel's rejuvenation. The nations will contrast their former scornful attitude toward the Jews (vv. 1-3) with their new realization of Israel's grandeur (vv 4-7).
53:5 we brought suffering upon Israel for our own selfish purposes; it was not, as we had claimed, that G-d was punishing Israel for its own evil behavior.
53:6 We sinned by inflicting punishment upon Israel. Such oppression is often described as "Hashem's punishment" (see 10:5, Habakkuk 1:12), for He decreed that it should happen (Abarbanel).
53:8 When Israel's exile is finally ended the nations will marvel that such a generation could have survived the expulsion from "the land of the living, i.e. Israel, that the nations had sinfully inflicted upon it.
53:9 Ordinary Jews chose to die like common criminals, rather than renounce their faith; and wealthy Jews were killed for no reason other than to enable their wicked conquerors to confiscate their riches (Radak).
53:10 That is, Israel. G-d replies to the nations that Israel's suffering was a punishment for its own sins; and when the people realize this and repent, they will be redeemed and rewarded.
53:11 Israel will teach the nations of G-d's righteousness.