Geez it wasn't much of a war was it. Nothing came of it. Kevin Owens actually had the best response to Roman Reigns when he tweeted "You didn't think that up on your own, did you?" He's a veteran of twitter wars and has had some of the best ones yet. Scott Steiner as well is a hoot on twitter.
Anyway, with both being on different brands, and Cena working more of a part time schedule than anything else, don't see why this match should even be taking place at Mania. Maybe keep it for Summerslam, but Roman Reigns whether he's up against Cena or Taker will get crapped on in Orlando. Pretty bad considering it's his home state and all.
There isn't much time between now and the Rumble and that's when matches are usually starting to fall into place. This year Vince seems to be running around like a chicken in a hot girdle. Would be nice to see the WWE even look like they know what they're doing heading into two of the biggest shows of the year.