Very true but the best warranty doesn't mean it's a quality part. I have used plenty of lifetime warranty electrical parts that fail after a few years. For example, the lifetime warranty Duralast coolant temp sensors for my 92 Cavalier usually only last a few years before malfunctioning. The standard brand ignition control module for the same car only lasted 11,000 miles before failing and taking out one of the coils with the same mileage on it. All of these parts have lifetime warranties but are crap parts. A Delphi fuel pump for our 1997 GMC farm truck lasted 11,000 miles before failing and it has a lifetime warranty as well. Electrical parts these days are just not what they used to be.The best warranty is the one you don't need!
Conversely, WVE actually offers the best warranty!
Since your TPS sensor is not hard to change and the Wells part is not that expensive, trying it is not going to hurt anything and maybe it will turn out to be a good part. OEM parts are not always a guarantee of getting a good part either these days.