Alex had a more consistent one, and overall deeper one I'd say. His weight class was pretty solid when he was competing, while Reem won the literally last relevant K-1 big boy Grand Prix, which frankly was starting to show its age.
Reem had a big upset win Badr (then lost to him), a good win vs Aerts, and a very credible performance against Bojansky.
His actual GP 2010 win involved a comically smaller Spong, basically a bye vs Saki who had a broken arm, and then old man Aerts who fought a hard won decision vs Schilt in his previous match.