Well, it just tanked a Super Ultra Fullpower Combined Bijuu Dama with absolutely no damage at all, so I'd say if anything it has incredibly formidable defense.

Sharrinegan gives him every single Rinnegan and Sharingan tech in existence. All six elements plus all KG and KT. Hyper Bijuudama of course I think....

With that being said, I expect it to use the abilities of all previous Bijuu, and the scale of it's abilities to be multi nation busters at the very least.

We need to keep in MIND that this is a majorly diminshed juubi considering most of his chakra is with kyuubi and 8 tails...so his abilities will probably be quite diminshed as well...