You have so much contempt for the Rangers that you are now being disingenuous about former Rangers. Buchnevich is a PPG player this year. Last year he was close to PPG, as well, without PP1 time. Trying to combine his full career stats, as if there's much relevancy about his current ability to stats from his rookie year playing 13 minutes a game is ridiculous. And you should know his ability pretty well, seeing as how he destroyed your defense a few nights ago.
And you are completely wrong about the Rangers top line not having a drop-off. It's almost as if you don't know the team well, and just look at box scores. Most of Kreider's offense has come on the PP. I'm sure you can probably find that in a box-score. He's one of the top net front guys in the league. Zibanejad is also notably a better PP guy than ES guy, and he's struggled at every strength this season. As Rangers fans have said many times, Buchnevich drove that line, and now they are worse because their line driver at ES is playing for another team. I don't have access to those fancy charts, but I suspect Buchnevich's chart this season looks a lot better than Kreider or Zibanejad.
You didn't explain who these multiple Sabres that are more valuable are. The Jets, I agree that they might have 2-3 more valuable players. Wheeler, no chance. End of his career and been slumping for a few years. Scheifele, sure. Ehlers and Connor is debatable, but I wouldn't argue too much about. However, the point remains that you have contempt for the Rangers, so much so that you denigrate their former players.