I don't see SPL as a rival to Sorare honestly, Sorare actually has the rights from the leagues and can use team names, logos, players, ... SPL only has the rights for the team names of MLS players. I also kind of assume SPL will be more a battler-style game where they just use the player stats at the end of the season to make the cards instead of a football fantasy game and I wouldn't be surprised if the NFT's were cartoons of the players instead of pictures. Overall not that many details are known about it since they basically still need to start making that game.

For Sorare, as long as a league is part of the tournament, players that play in it will get points. Only players that are part of leagues where they have the licence are being put up in auctions or given out as rewards with a limited number each season of 1000 Limited / 100 Rare / 10 Super Rare / 1 Unique. All leagues that they support give players points for the specific tournaments they are entered.

For example, Bundesliga is licensed and if you bought Haaland last season, you will be able to put him in your team and score points as EPL is supported. There is a risk of players getting injured or being transferred to a country that is not supported. I'm not sure exactly but I think they plan to give a use-case for retired players also.

I play the game with an eye to 'buy low & sell high' not as buy the best most expensive players to rank high and potentially get rewards that way wich comes with quite some risk and is more a whale game.

It took me some time to really get into it but now I'm loving Sorare. It adds so much fun to watching games and following the league. I also believe I won't lose money over time and potentially could make a profit.