Well, lets see. From what I understand, the whole reason the government wanted a "meaningful vote" is they didn't want the Withdrawal Agreement Bill to be properly debated, as that is where all the promises and broad statements start to fall apart.
If the deal is so good, and they think they have the numbers, why are they so nervous about real scrutiny?
This scrutiny could lead to all the double opposing promises to crumble, as amendments pass that erode the faith various supporting factions have placed in Boris's bluster.
Ian Dunt's twitter is the best source of reasoned optimism I've found. When he says the games up, I'll concede.