I think that all of those bolded matches are on the same level as everything outside the very tip-top of Roman's matches. Outisde of the WM31 match, and one of the Shield/Wyatt matches, I would say the Drew, Sami, and Cody stuff is on the same level of the AJ stuff or the Bryan stuff.
I'm not really interested in relitigating the Sami/Roman mudfight, but I agree that if everything in that match was exactly the same, but Sami won, it would have been incredible, but that has nothing to do with Roman the wrestler, outside of the usually top guy politics to remain on top. So, maybe the match could have been better, but I think the one thing you can point to that would improve that match, isn't ultimately on the shoulders of Roman or Sami.
As for the length of matches, I love a short match, and I do think you could criticize the Roman main events of being bloated and overbooked, but I personally don't think any of the matches have overstayed their welcome or gone too long.