> No because not every sport starts ELO at the same baseline [...] (i.e. Lichess starts everybody with 1500, Chess.com starts everybody with 1000). It's not ju

> No because not every sport starts ELO at the same baseline [...] (i.e. Lichess starts everybody with 1500, Chess.com starts everybody with 1000). It's not just where they start - they actually use different rating systems, and neither of them is the actual Elo rating system. Chess.com uses Glicko and Lichess uses Glicko-2. This is also a big part of what makes comparing players from different player pools a bit meaningless. What I think OP is asking is "If you used the same rating system in two different sports, would a 200 point difference mean the same thing?", for which I think the answer is "yes".