Ok well first off you didn't specify which of the 3 4-A forms Chakravartin is using here. SBA assumes strongest version so uh, yeah. Chakravartin has a pretty HEFTY AP advantage. I'm pretty sure the verse is also receiving a downgrade.
Bowser's AP comes from very vague stuff like "several stars in the background" and Lumas being able to grow into Planet and stars.
Meanwhile Chakravartin's AP comes from the fact that his Creator Form one shot Six-Armed Mantra Asura, who had one shot his previous form, who was sucking the milky way galaxy to it's center by standing there. I'd also like to point out that SAM Asura's casual attacks destroyed multiple planets and stars, which is already>>>>4-A statements from Mario.
So we know Chakravartin's Creator Form AP>>>Bowser's AP, and seeing as his AP comes from being able to take hits from Mario, and Bowser's profile states Bowser is stronger then Mario, then we know Bowser's dura isn't all that.
Now let's go through speed. I'm not all that good with the math values used in the calculations but this is probably better equalized.
Now let's do hax. Bowser has some really good hax. Transmutation, Sealing, Plot Manip, mind control, etc. But the problem is, Bowser barely ever uses his hax, and instead tries to brawl. Meanwhile, we have Chakravartin who has WAAAAY above average intelligence and spams his hax. Then there's also his life and death hax which are pretty good. But, I'll give Bowser a huge benefit of the doubt and say they're roughly equal in the hax department despite Bowser having **** all for Reality Warping on Sharkavartin's scale.
Overall, I'm giving it to Chakravartin for Higher AP, Dura, and debatedly better hax, as well as being smarter and possibly faster. I'll say that Chakravartin will take it Mid-High Diff.
This is all assuming Creator Form is used.