Logical conclusion yes, but i am sure this dose not get you far on WGT.
The standard Putter has a meter speed of 5, so any putter bought is likely to be quicker.
So the question is how much worse is that shiny new Putter.
Often needs a Ball with some meter Points to tame it.
Slower is not always better, i find a overall faster speed is often more consistent, less choppy and easier to ding.
Takes some experimenting what speed works best for you.