The americans have got the best airforce but they are loosing foot solddiers in Iraq & Afghanistan. Before that they withdrew from Vietnam even though Vietnam air force was 3rd world.
Even if Spore's air force destroys all their objectives, its not going to be the end of it. No air force has ever won a war. You can use it for deterrence but once a shooting war is starts the army gets involved.
There's still the Malaysian army & the NS guys are going to be called up to defend Spore's borders. There are many soft targets in Spore & even a single individual can do alot of damage.
I don't see the Malaysians attacking Spore as there is nothing here of interest to them. However there's more likelihood of Spore attacking Malaysia for its water, sand,...