Hard to say regarding innings. I definitely like Irvin's durability.
But Eovaldi has more upside due to his significantly higher K rate (averaged over 1 K per inning in 2019-2021, just missed in 2022) and his longer track record of success, plus succeeding in the AL East. Plus, while Irvin is a lefty, he has reverse splits, so Walltimore won't necessarily help him more than a righty-handed starter. Aside from a rough 2019, his WHIP is comparable to Irvin's, a few points worse.
Irvin worries me due to the soft-tossing nature and seemingly poor stuff. But as I said, I like the deal and am hoping for the best.