Now we're going to use the actor putting on a little weight as a critique of his character? That had no bearing on his performance. Getting sprint training specifically for the running scene in the film so he could run in a certain efficient style did.
I thought Craig's running during the parkour sequence in Casino Royale
and the Italy footchase in Quantum of Solace
were totally convincing. He's very different from Quinto's style of running as Spock, however. He's much more powerful looking, and leans in to the run. But I know you didn't like Craig as Bond anyway.