Elac Uni-Fi Floorstander vs. Bookshelf

Hello Community. I’ve recently rediscovered my love for my Elac Uni-Fi UB5 Standmount Speakers. They hypnotize me into listening to way more music than I had planned. The only issue I have is that during complex, loud orchestral passages (peaks in the upper 80’s), they struggle a little bit. If I purchased the equivalent floorstander in the Uni-Fi line, would it be safe to assume that the floorstander would achieve the same sound signature as its little brother, but be able to handle these busy-loud passages more effortlessly due to more drivers doing the work?

My amp is an Odyssey Khartago Plus.