If you purely went back back and arms, Wheeler and Ronnie were neck-in-neck. However, Ronnie's glutes were twice Flex's size, because he actually did squats and lunges (flex just did leg press and hack squats), so his hard work paid off. Moreover, Ronnie's waist was still very small at the time, and Flex had already started using oil in his biceps and shoulders, so front the front Ronnie's annihilated him period.
The other guys are good but their backs are all too narrow, including Levrone (who's otherwise perfect).