You may not really know for sure until you try it out for yourself. While I don't have issues with it myself, a good friend of mine does. In his case, he has severe problems in a regional jet of any kind even in F. Actually it's not much better for him even with the larger "mainline" jets. He has found that if he can sit in an aisle seat and board at the very end of the boarding process on a larger plane, it helps a lot but doesn't eliminate the risk of problems. From what my buddy describes, sometimes a particular seating situation will bother him more than others, but he isn't always sure why. He's in the process of trying some medications from his doctor now and may look into some cognitive behavior therapy next.

Anyway just one anecdote. I hope you find out something that works for you!