He is far above mountain level.
As me and others keep trying to hammer into that wanking mind of yours, he isn't. The guy's only at town-busting levels and only hacked apart a section of a mountain with his swings.
Avalon can't be used for an infinite time and will eventually run out.
No one in Bleach is getting through Avalon and will only kill themselves trying when they get their attacks reflected back in their face.
Saber is not getting anywhere beyond ulquiorra
On the contrary, she would be a good match for even the high tiers of Bleach, so long as Avalon is barred. You're just too biased to think otherwise.