I thin he got MVP consideration because of two things:
1)The Knicks were overachieving at a time beyond the experts predictions.
2)Amare was def going nuts, leading the league in PPG for a time.
That said, his style of play is not that of someone who can lead a team on his back for a long stretches and to a chip like other elites. Amare has always been the 2nd best player on a team except for that 3/4's of a season prior to trading for Melo.