I was going to say something along those lines too. Turbo Express isnt as much a handheld system as it is a portable version of the console.
Except the Turbo express didn't compete with the nomad. It competed with the GB, GG, and Lynx.
I have to agree the TE was the superior hardware platform at the time, followed by the lynx, followed by game Gear, with the Original GameBoy coming in at dead last hardware wise.
The fact the TE was the only system at the time that allowed you to take your actual console games on the road was negated only by the fact that both the TG and TE and games were practically impossible to find in the US. Unless you looked at Macy catalogs regularly.
Game selection wise the GameBoy and a Game Gear were the top dogs followed by the TE. With the Lynx in dead last.
Sales wise the GameBoy was king no question, followed by GG. Not sure how the lynx sales stacked up against the TE.
So that's the factual breakdown. If you want my personal opinion I preferred the graphics of the GG and it's color backlit screen. But the battery life rarely let me finish a game on the road.
The GameBoy was always a b!tch to see even with direct light or a light adapter but I could play it for an entire day on one set of batteries.
Legend of Zelda: Links Awakening is my favorite video game of all time. I liked the sonic games on GG but I can't claim to care about any of the GG games enough to have a favorite.
So for me GameBoy is the victor.