Prediction Market Arbitrage??

I know sports arb is the most common and I have seen people like oddsjam incorporate prediction markets into their line tracking, but what do we think about arbitraging other markets on kalshi and polymarket. Saw a couple tools on X like cross odds app and stuff like that track for +EV opportunities across markets not just NBA NFL etc.

Love to hear what y'all think, or is sports arb just better?