Oh I'm just claiming labeled scale, I won't make any claims on actual

.
The mini vehicle series are produced over a range of scales, and I don't think all of them are labeled.
You are correct the Vehicle collection line is technically a "box scale" line and have no scale printed on the box
However, for our benefit, Bandai has made an effort to at least keep most fighter sized subjects in the 1/144 range or 1/350 range, but the last few releases have ventured away from that and have all been large/small enough to fit the box scale
Kits not in the vehicle collection line like the U-Wing are explicitly labelled as 1/144, 1.72, or 1/48
They have also explicitly listed things like the X-Wing combo and even the Snowspeeder combo as 1/144 scale in the 1/72 and 1/144 combo pack and the 1/48 and 1/144 combo pack
On a side note, there are some Shapeways upgrade sets for the Snowspeeder cockpit and raised flaps should you do anymore