John,

Quite simply it comes down to which one you prefer to shoot. Both rifles will probably be capable of an Olympic winning performance straight out of the box. The "strengths" and "weaknesses" of either will really be at the margins. FWIW I perceive that FWB seems to find favour with smaller shooters and the taller cohort tend towards Anschutz, but large and small use both.

Unless you are already shooting 570+ I do not think it will make any discernible difference which one you go with.

Rutty