I don't think L&M tested the VL1300... the light in their chart is the TL 1x30 a spot light. Apples and oranges.
I have "tested" the VL1300 (I own 2 of those) vs the Sola 1200 (which I was planning to buy but they were back-ordered when I needed them).
At least turned them on in a store and compared their projected area at ~ 3 ft (somebody was holding the Sola). The beam diameters looked similar to me but indeed the Sola's beam edge was softer and its color whiter (the VL1300 had a slight yellow hue to it compared
to the Sola. But when you look at it on a white wall, it looks perfectly white. The Sola (maybe due to the whiter color?) seemed brighter to me.
The bottom line is two of these lights are sufficient in most scenarios I have encountered. However, the light is insufficient to light up foreground and background, obviously. So you will still get a well lit subject with a greenish background (if you shoot in such a way that there is a very far background).
I use the filters to protect the light in the rinse bucket or in general whenever I am not using the light. Filters absorb light, so you would end up with far less than 1300 lumens using them.
Those lights are heavier than the Sola. I commented on them here