So... where's the MSP equivalency chart to Foundry? heh heh heh
But seriously... are there any Triads that happen to be about the same? Was there any consideration to matching or improving upon their triplets ?
Unfortunately, nope.

I tried the Foundry paint as a prototype and again later on and was frankly not impressed with it. If someone brought me a full set I'm pretty sure I could set up a rough equivalency chart pretty easily, but I would need wet samples in order to do so. Which is why you see Pro Paint and GW equivs (and Vallejo in progress), because I own all those lines, so I can readily compare!
I will also admit to bias re: the equivalency charts. Though Foundry is used widely overseas it's difficult to get here, and Foundry painters I have known who have tried Vallejo or MSP's have gone over to those lines in preference to Foundry. To me, that says that Foundry is not as much of a factor in today's market, so I'm less concerned about matching them.

But mostly it's the lack of wet samples, because if you put a paint in front of me I can tell you within ten seconds which MSP will be an exact or close match--sometimes not even that long!

There we go, the ReaperCon '07 Challenge--somebody bring along their Foundry paints and I'll do an equivalency chart!
On the plus side, I seem to recall that their line is smaller, so they were probably more successful at making sure that the intervals between shadow, midtone, and highlight were consistant and they probably don't have the problem of some colors being very close to others (which I've just started to run into). The downside to that is if you're working at 28mm or larger and looking for non-block painting you probably will want to mix 50/50 colors between each step.
--Anne