Can someone tell me if this is cat asthma?

Long story short our cat had some health issues early on around 1 year old. He has pica and eats all sorts of things like string wire cardboard etc. he had to have surgery to remove a blockage in his stomach. Since then we have cat proofed the house so he can't eat as much. Ever since then he has been on prednisolone for a breathing issue. Lately it has become worse. Here is a video of an attack. Can anyone tell me if this looks like asthma?

[VIDEO][/VIDEO]

That would actually make more sense due to his stomach problems. He does vomit more than he should and we had discussed this with the vet. He still eats and goes to the bathroom normally.