I just released a Ctrlr panel for the AS-1 which also reads and converts P6 programs, and a P6 panel which reads and converts AS-1 programs. The conversion includes the sequence (though when going from P6 to AS-1, the sequence becomes monophonic).
The parameters of these two synths are nearly identical except for the effects; however, there are other small differences - the range of the HPF cutoff is different, and they seem to be scaled differently, so after conversion the value might need to be changed to get the same sound. Filter envelope amount seems a little greater for the AS-1: on one program, reducing the value from +87 to +82 made the AS-1 sound like the P6. Envelope decay and release times are a little different too - I had to increase the AS-1's values maybe 10% to sound like the P6 for several programs. The triangle sub-oscillator is a little buzzier on the P6 than the AS-1, so that affects the overall sound when that's turned up in the mixer.