I don't think there was any doubt that Noel was always the more talented of the brothers... however, there is also no doubt that Liam was a bloody good frontman during the 90s to early 2002, after that it went downhill as his voice started to age.
Shame really, I think if Oasis got together again they would still run riot... Noel has admitted he regrets releasing standing on the shoulders of giants, in his words "it sounded like a bunch of guys in a studio not giving a ----"
Will be interesting to see how Noel does when the album is released, he thinks he'll do similar to Beady Eye but by the looks of it he will completely leave them behind.