The 'VU9P has ~2.5M logic elements and 6840 DSP units. The M2S090 has ~90K logic elements and 84 math blocks. It's nowhere near the same class of device.

The AWS FPGA offering only makes sense if you absolutely need a massive FPGA connected to massive amounts of RAM, and don't want to spend the bucks to own it yourself.

Microsemi doesn't make high performance FPGAs. Their niche is aerospace/defense, low-power, and flash/instant-on FPGAs.