Keep in mind those are all estimates. Take them with a healthy grain of salt. You can probably figure out the major part of the story by looking at the playoff picture "manually".
MTL and OTT have a good lock on A1/A2 in some order: they could flip, but they're more likely to stay in the order they're in. I don't see the Leafs or us passing either of them. TOR/BOS are vying for A3, and I'd give Toronto the slight inside track, if you ignore the fact that they don't have their starting goalie as of last night. Overall, in reality, I'd say it's a push between TOR and BOS. If we don't pass Toronto, we have to fend off both NYI and TBL for the WC2 spot.
Thus, we're likely going to be in A3, which matches up mostly against OTT, with a touch of MTL.
We're not quite as likely going to be in WC2, because if we're bad enough to drop out of A3, it might be because we got clobbered by NYI/TBL in the standings (and TBL in our one remaining game against them). Being clobbered by TBL in particular might squeeze us out of the playoffs altogether. If we do hit WC2, we play M1, which is probably Washington, with a small touch of CBJ/PIT if one of those teams passes WSH.