Yet - when Gilly had the same "slump" before he hit his ton in the WC final, people were saying the same about him.
Not that Gayle and Gilly are really in the same league, I do think Gilly is way out there on his own, I don't think Gayle deserves an "imposter" label.
And Wisden agrees with me listing him as one of the top 40 players from last year
Wisden - 2007 - The Wisden Forty although they also say "If Gayle could only turn cameos into concrete, there would have been even more."