Yeah see it's all about which member dies/leaves.
I think it works in an outfit like The Who, because all four members were renowned for some reason or another, and even with the colossal gap left by Moon and Entwistle, I mean... we've still got Daltrey and Mr. Windmill. Amazing musicians really, classic catalogue behind them.
I don't find the Q+PR thing to be too offensive, because I reckon Brian and Roger were also instrumental in that Queen sound (listen to April Lady - they were well on the way before Freddie showed up), and this new tour is *supposed* to be something else. I don't see it as an insult at all, but that's just me (obviously!).
As for Guns 'N' Roses - I don't care, they're not my cup of tea. But, more power to them and I hope they enjoy the show.