I haven't read your guys back and forth, but pretty sure I know the gist of it. Unit size does matter if you aren't showing any other statistics with it. Most feel unit size should universally be 1% of bankroll, but I really don't think that holds true for a lot of people. Some just define their unit size as X at the beginning of the year and never adjust even if they are up or down big that year. I do think "inflated unit size", which is actually "deflated unit size", is an issue when people talk about winning like 50 units in an event. If they defined their unit size differently, it would be a lot less. So in a way it really exaggerates results, however, it does the same for losses as well.
To me, it's not really an issue as long as you have other stats like ROI. Someone like MMABettingTips used to bet a shitload of units per event, but he never posted other stats either. When I calculated his ROI, it was pretty fucking low although his units won made it seem like he was doing solid. He very purposely didn't have ROI on there. Actually, I think he went as far as posting ROI after I gave him shit and then removed it when he redid his site because it was very low.