Please... list* the higher highs for me.
Because I actually finished them and don't really remember these higher highs. In fact, anything from Generations was better than whatever Adventure series put out, even it's own stages.
There was a lot of good with the Adventure games despite the issues both games have:
-Level designs for the Sonic and Tails levels in SA1 (most of them, Sky Deck sucks X()
-Music in both games are amazing
-Classic games physics systems return for Sonic/Shadow in both SA1 and SA2, leading to them being a natrual evolution from the original Genesis games gameplay wise
-Amy and Gama's stages were better then expected (the former had okay level design while the latter was Sonic with a Gun....no wrong there if done well, which it was to me personally

)
-SA2's Speed Levels are all amazing and hold up very well.
-SA2 has one of the strongest soundtracks in the franchise (though I really like the variety that SA1 has with its score)
-The Story in SA2 was decent for what it was and when it did things right (making Robotnik and major threat, Shadow's introduction and role in the game being strong, some great scenes between Sonic and Shadow) it had some great moments
-Final series of boss fights in SA2 were great
But the Adventure games had a lot of problems holding them back

.
-Big the Cat was NOT needed in a Sonic game X(.
-Camera in both games had a lot of issues
-Lip-synicing was horrid in SA1
-Graphics/animations in SA1 do not age well
-SA1's extra characters were clear padding once Sonic's story was done (though Tails, Knuckles, and Gama were fun to play as despite issues)
-SA2's Treasure hunting stages can die in a hole X(.
-Broken Radar in the SA2 Treasure hunting stages
-Tails/Eggman stages in SA2 felt forced (mainly for Tails) and was a downgrade from Gama's gameplay in SA1
-Hated Canon's Core (Final stage in the game) in SA2
-Crazy Gadget and Mad Space have a lot of issues with the camera and gravity (the later was really bad with this)
As someone who grew up with the Adventure games as the games that pushed me back into gaming.....I love them, but I can clearly see the issues they have

. They have bright spots but the bad elements are very flawed.
Still better then Shadow and Sonic 06 by long mile though

.