superpump is more for a preworkout pump, has stuff like caffeine and arginine etc for that pump during workout
size on is supposed t b for during workout and before bed, it consits of more creatine glucose blends and that super carb called outlast wich is supposed to b as good as vitargo.. they both serve different purposes but yes they work good together
take the superpump about 30-45 mins before workout
then drink sizeon during your workout and before you go to bed
give this about 2 months at least to see really good results, remember its hard to judge a supplement on just one month basis