Inside and Limbo do have puzzles, but they're fairly predictable, mostly just variations on things that have been seen before. They're nice diversions, and have a pleasing graphical style, but the general sentiment of your comment is pretty much correct.

What made Braid so special was that it introduced an entirely new mechanic, explored the entire possible space of puzzles for that mechanic, and explored a bunch of complimentary orthogonal mechanics at the same time.