Ain't gonna make you lift heavier... ever.
If you're trying to snatch in Converse instead of Adipowers, then you will lift more in the Adipowers guaranteed. Depending your squat and pull style, they could add kilos there too, but mostly they just make you feel secure while lifting which adds a lot of confidence which is important. I'd definitely recommend these shoes to anyone who wants a serious shoe, but not at over 300 bloody dollars delivered. I notice Iron Edge has tons of different colours and sizes of the Nike Romaleos and they end up about $30 cheaper delivered over buying from the US, so that would be my recommendation.