The addition of Blue/Violet lasers or Light barrels attachments will each decrease your tier by -1 (improves accuracy) Having "ADS Accuracy While Moving" penalty attachments increases your tier by +1 (decreases accuracy). By default, only the +0 case is shown.
Display
0.04
Burst compare only affects the spread compare plot. In burst mode, the main shots slider becomes the number of bursts, and the graph still shows pre-shot spread only. The burst wait slider adds extra delay beyond normal shot cadence, so 0.00 s matches the fastest possible re-start.