On the face of it, with no context, that seems like a great point."Woe to you, Chorazin! Woe to you, Bethsaida! For if the mighty works which were done in you had been done in Tyre and Sidon, they would have repented long ago in sackcloth and ashes." (Matt. 11:21)
Added bonus: even Sodom would have repented had they seen the same miracles!
"And you, Capernaum, who are exalted to heaven, will be brought down to Hades; for if the mighty works which were done in you had been done in Sodom, it would have remained until this day." (Matt 11:23)
It seems to me that if the Calvinist understanding of total depravity is true, then neither of these scenarios would have actually happened since (in the Calvinistic scheme of things) the non-elect have no ability to respond favorably to any outward call of the gospel; they don't have the inner regeneration of the Holy Spirit causing them to respond favorably.
The problem is that all of this occurred under the Old Covenant when repentance was an outward physical act, rather than under the New Covenant when repentance was an inward, spiritual act.