@killyourfm @Tau The plugged-in part is the big difference here. From Phoronix's various benchmarking articles, the Ally allows a much higher TDP only when the it's plugged in, whereas the Deck remains the same regardless. The Ally doesn't seem to allow/work using the higher TDP when it's on the battery.
The 30% difference also seems to correlate with their benchmarks given this.