Jigen is not beating Ichigo ,the only reason Naruto/Sasuke beats Ichigo is because of their immense versatility when compared to Ichigo and the only reason Jigen beat the ninja duo is because of thier bad Compatibility with his fighting style.
it's like people don't understand compatibility and just go with ABC logic even when it don't fit. for example-Jigen has nothing he Can do to Someone like Bankai Yama-ji due to bad compatibility, Ichigo >>> Yama-ji So I guess Ichigo solos Naruto/Sasuke. Wrong.
All Jigen has is physicals and his shrinking ability(for now). Jigen is not beating Ichigo with pure physicals alone and neither is a single bleach or Naruto character from the entire cast beating Ichigo with physicals alone.
OT : 1st round could go either way
Ichigo takes second round high diff.