The cousins meet, and at this stage the eight weeks and a day between them makes a huge difference. Thor made Fisher look like a sumo wrestler, but Thor's head & neck management is incredibly sophisticated (Fisher's still flops around lie a fish...) and his attentiveness/focus was unbelievable, not to mention he's already rolling over and practicing sitting. Isn't it amazing the difference a few months can make? And in no time the two of them will be wrestling around on the floort!