Bresser Pirsh 10x34 vs Olympus EXPS 10x42

The Pirsh model is roof prism so more compact and should be slightly less bright and sharp, the EXPS is porrro prism and has bigger lens so it should be more bright and sharp but it's much bulkier. After my observation session and after analysing this video I can say that they are very similar, maybe Olympus has a slightly sharper image and more vivid colours but it's hard to notice. During a cloudy day or at dusk Olympus could be better but during a sunny day it performs only about 5% better.