GBA was like Wario Land 4 and a few good Metroids, and everything else was "bad SNES port with oversaturated colour palette", "weaker version of console game", and horrible licensed shovelware.
when a GBA game looks great it's like an alternate timeline where the SEGA Saturn kept going for 5 more years but everyone decided to outdo each other's pixel-art and when a GBA game looks bad it's like you're looking at an edutainment java game for cellphones