Foundry figures come in all sizes, depending on the sculptor and the time period when the sculpts were done. Some of their old ranges are pretty tiny. The World War One range is of this sort, and I think the Franco-Prussian is too.
The bad news is that Renegade figures are massive by comparison. Totally at the other end of the scale. I'm afraid I don't think I have any of the Foundry Franco-Prussian figs any more. I offloaded them on to a fellow LAFer as they were no good to me. So I don't think I can do a comparison shot unless there are a few more lying around somewhere, but my memory tells me they were pretty small. I'll have a look if I've any left.
If not I could do a comparison shot of Foundry WWI and Renegade, if that's any use to you. Not quite what you asked for, but the best I can do.