Comparing Bray Wyatt and Dean Ambrose to Undertaker and Kane is an insult to the Brothers of Destruction. Bray Wyatt is an inept rookie who never should have made it out of developmental. He can't talk, can't wrestle, cuts endless promos about nothing, and has been matched against some of the biggest names in the industry and always fails to make anything special. I don't know how much he bribed people like Chris Jericho or Stone Cold to praise him endlessly, or maybe they owed his dad a favor, but they're nuts if they think Bray Wyatt has "it".
Dean Ambrose is a little better than Bray Wyatt, but that doesn't mean much. Ambrose is a serviceable upper midcard guy, but should never be within a mile of the main event scene. He's a mediocre wrestler, cuts mind-numbingly horrific promos that sound like a drunken idiot about to pass out, slurs all his speech, and makes absurd facial expressions that make him look like a cartoon. It's impossible to take him seriously.
They're two of the least bankable young stars of their generation. Both of them could be released tomorrow and WWE would lose nothing.
Judging by the majority of opinions regarding the two guys and ofc, based on what Vince himself has said, your opinion above holds little weight at this point.
Ntm, I said they could fill similar roles to what the Undertaker and Kane have on the card for a number of years, due to them both having different characters than the norm. It was in no way a direct comparison between the BoD and Ambrose-Wyatt.
Again, you don't think highly of Wyatt and Ambrose. That's perfectly fine, but judging by majority opinions around the internet and also in Live Arenas...it is clear both are headed to prominence as long as WWE continues to show faith in them as it is clear the WWE, alongwith many others, see the talents that both guys possess in abundance.