Watching the games, those weren't fluke performances. The sitations Manning is throwing into when he's targeting Bennett shows that he trusts him. Granted he's virtually come out of nowhere, he has the size and talent to be amongst the league leaders and Manning is taking advantage.
The league is catching on to the value of targeting TEs that are too fast for linebackers to effectively cover and too tall for corners to effectively cover. Plus on a team with Cruz and Nicks, nobody can afford to double team a TE. I look for Bennet to find himself with light coverage in the endzone quite often. Receivers like Cruz and Nicks are great to have for deep passes with their combination of hands and speed. When it gets to goalline stances, TEs like this are targeted often on throwing plays.
In other words, he's showing he has the talent in he's in as good a situation as any.
10-team keeper league - QB, 2 RB, 2 WR, TE, FLEX, D/ST, K QB - Newton, Palmer RB - R. Matthews, Martin, Stewart, F. Jones, B. Brown WR - Julio, Austin, Maclin, Heyward-Bey, Amendola, D. Alexander TE - Graham D/ST - Bears K - Tynes