We have been using the same ab lines for about 10 years with ridge till and every year when digging stands we occasionally find signs of seed planted on last years remains of the previous year's row.  So accuracy should not concern you.  However our implements are 3 point mounted not pull type.

In ridge till applications RTK will not create better stands by itself but it will let you manage other issues that lend consistency to that end.  IE it is accurate enough to always plant over the mark if you wish or always miss the nh3 mark if you wish.

Arnie