I can’t see this scenario just based on on Berard and Sykora motor and tenacity. These other prospects that are getting their first taste of pro game this season will overtake these two as soon as they get anywhere close to the same performance levels because the size difference will be a factor if not against both then at least against one of Berard or Sykora.
Eh. Look, there's definitely validity to the argument that size matters. It does.
But two guys with big motors that are undersized can fit into the same lineup and win a championship. These are both players that at their peak will be tenacious motor guys with speed who will get in on forecheck and create havoc. If they both reach their ceiling or close to it, they could prove to be more effective players than the big dudes, if the big dudes just aren't as effective.
For instance, Brian Boyle was a good Ranger but in a 4th line role. He really couldn't play up the lineup. Not even top 9.
Whereas Carl Hagelin moved around the lineup quite a bit because he could help any line retrieve the puck.
If Berard and Sykora approach Hagelin levels (and Berard may very well have more offense), then they become very useful.
One thing this team has not had in recent years -- the right chemistry and perhaps the right players to have more interchangeable parts upfront. If Syky and Berard both end up being bottom 6ers with limited offensive upside, then yeah, I think your argument carries significantly more weight. But if either or both become guys who can move around the lineup and fit in on multiple lines and vastly improve our forecheck then that can be as team-identity altering as any other move. To me, when Vegas was at their best, they weren't juggling 6 or 7 top line guys, they had 8 or 9 very effective players who played with pace who could easily move around the lineup. That allows teams to come in waves on forecheck, handle injuries, and make lineup adjustments on the fly.
If BB and AS both end up becoming that, they are not as redundant as having two Brian Boyles or two Bretty Howdens or two Kaapo Kakkos.