On paper the two games are nearly identical: they're both MOBAs, they both use very similar visual styles and map designs, they both have similar player abilities and most notably they both have the exact same gameplay mechanics. (nikopartners.com)
Featuring the same gameplay mechanics we already got used to from the first title of the franchise, this sequel will include a better matchmaking system that will allow players to search for clans to adhere to. (fraghero.com)
but all lego games after that were pretty much the same gameplay mechanics, and not as fun IMO... the exception is of course LEGO city undercover, which is not a typical lego game and has alot of potential... that game, I AM looking forward to and see how it does (nintendotoday.com)