Splash at DL and WDW are virtually identical. Only thing missing from the DL version is Brer Frog.
That's a NO all over the place if you truly know the rides. Besides the obvious different logs (which are a massive plus at WDW) you have:
Different lighting schemes
Different color palettes
Different music/score
Different lift mechanisms
Different blocking mechanisms
Different sound effects/water gags
Different stations/boat storage
Bird Tree/Tree House after B lift on WDW's
Autumn backdrop on DLRs vs Blue Sky backdrops on WDW's
Farmer Rabbit scene on WDW's
Million Dollar Brer Rabbit on WDW's
Totally different scenes before 2nd drop (WDW's has much more characters and theming)
Brer Fox Honey Scene on WDW's
Completely different scenes at base of C lift
Different run out areas
I know on the surface they seem the same, and yes they do share the same layout for the most part. But they're very different- as is Tokyo's (even better version). Since we're debating the nuances of stuff like Mansion and which are better- WDW's Splash is really a massive upgrade to DLR's even on the surface. Underneath, where CM's and maintenance are involved- it's even more different (and much better at WDW). The Splashes are probably more different or at least as different as the Jungle Cruises, the Mansions or the Thunder Mountains.