I care less about W rating on charging and more about effective results. If at 27W the damn thing throttles (which mine does quite a bit, and I live in a relatively cool climate, and even go so far as to throw the phone on an ice pack when charging, esp when wireless charging, about the only way to get it to charge at max the whole charging curve), I really don't actually want the 35W charging (because that's just spec sheet fun), I want the thermals to improve to maximize the 27W output first along the whole charging curve without having to ensure it's on an ice pack or in a very, very cold room shielded from all possible sources of light/heat.
Hell, take my 27W away but give me 15W but with thermals that keep the throttling at bay.
Hopefully Ti's (on paper) heat dissipation advantage over SS gets us something here (although the internals remain Al....the frame/Ti join does seem to be non-fastener related and is friction welded it appears, which also in theory is good for thermal conductivity).