Take the defense out of the picture and pretend they weren't there and look at his burst and top speed. Coming from someone who watched every carry last year I can say he's a completely different back when healthy. If you timed him in the 40 on his best day last season it would have been around a 4.7 and now he's back to the 4.5's. And you talk about the one guy he made miss on the play. That's one more guy he made miss than all of last year.
1)
Unfortunately, when the regular season hits, there will be defenses on the field.
2) I agree he is faster this preseason than last season, but it is unlikely he will only need to make 1 guy miss on many, if any, plays during the regular season.
I'm not sure what to make of Forte for this year. Martz pass-happy offense should allow him more room at the line to break through. I was surprised to see how often the Raiders played against a run, given Martz's history. On the other hand, it likely will mean less run opportunities for Forte. Marshall Faulk averaged 237.4 carries with Martz from 1999-2003 and Frank Gore only had 240 carries in one season with Martz. Forte likely won’t sniff the 316 touches as he had in 2008, or even the 258 carries last season.And if he can't break 4.0 YPC, that means far fewer rush yards. His receptions may be high, he is a good receiver, but so is Taylor. I think that people are very much overrating him based on one play which was a defensive breakdown, and unlikely to occur during the regular season. Not to mention, the Raiders were 29th in the NFL in stopping the run last year, so temper your expectations
He will likely be a good (maybe even top-10 PPR) FF back this year.
But I still think people underestimate how poor of an NFL RB he really is... which is why the team very quickly signed Taylor. And poor NFL RBs have a history of not sticking as starters for very long.