Happy to share stats! I have played 207 games this year that would qualify for the podium challenge. Of those games my ROI is 68.99% which I am quite happy with.
Overall I have played 467 tournaments this year with an ROI 27.20% which I'm not so happy with. I would like to see that hit the 40% mark but until I've played at least 1000 games I don't think it is any real indicator.
My best ROI (in games ive played over 15 times) is €10 freezeouts and I'm running at 194.05% ROI.
My worst is €1 freezeouts where I'm running at -11.05%.
Again, very small sample size.
Happy to share anything that helps you in my blog.