Going strictly by numbers, it's a pretty good bet. Each of the past three years he's beaten Klefbom's career best. If you want to hang some of those points on Jack Eichel, you should probably do the same for Connor McDavid or Leon Draisaitl as well.Again, this is not an guarantee. This would assume RRs PP production who transfer completely from Buffalo to here. The defensive play would be a decrease. If you assume RRs PP ability does transfer smoothly to here and he continues to have the same PP production, you are looking at a net wash out between the two. So really the only reason for the trade is to switch handeness. And that's best case. So 1 for 1 it wouldn't be the worst trade in the world, but not the smartest either. When you are targeting RR, you are doing a ton of hoping, wishing and projecting
And my question about your final point: What are we doing if we don't? We're putting a left shot defenseman (Russell) on his off-hand and playing either him or Matthew Benning higher up on the depth chart than they would be if this trade would be made. How is that not hoping and wishing?