Yeah, different definitions of scale can be confusing, but everyone is aware of it. If a particular aspect of scale fidelity is important to you, then verify it carefully before buying. No serious hobbyist expects a 6464 boxcar to adhere to scale dimensions and details. I can't tell the difference between a 1/43 and 1/48 vehicle unless they're side by side - if they make a nice scene, it's all good.
Among my many train interests, I subscribe to Railway Modeller. I'm amused that some OO modelers (or are they modellers? 
) are so bothered by common track being about 8 scale inches too narrow that they will regauge all of their locos and cars to EM - so much work! On top of that, an article in a recent issue of RM pointed out that EM track is only 4'6" gauge - 2-1/2 scale inches too narrow! Oh the humanity!
It's a hobby - we do it for relaxation and enjoyment.
