The only APS-C camera with a stacked sensor is the Fuji X-H2S, with 26mp. Price-wise, at nearly $3K, it's not a competitor. It's Fuji's version of a professional sports camera...or would be if Fuji's autofocus was better. The R7's closest competitors are the Fuji X-T50 or X-T30 III, maybe a couple other Fujis, and the Sony a6700. Some Fujis have 40mp sensors. It's an odd market, and making direct comparisons aren't as cut-and-dry as R6 III vs Z6 III vs A7V, or R5 II vs A1 II vs Z8.