Position PULSE against NERVE

PAPER.md

@@ -79,8 +79,12 @@ be a component, but flicker-free video needs temporal conditioning.
 | Text/UI/screenshot upscaling | a text-aware restoration model, not PULSE |
 | Temporal video restoration | a temporal model; PULSE is per-frame only |
 
-PULSE is not competing with HEART on PSNR. It is the tier where “runs anywhere,
-converts cleanly, and trains on a consumer GPU” matters more.
+PULSE is the **tiny/fast NERVE sibling**: the same practical philosophy, but
+far fewer parameters and a lighter operating envelope. NERVE is the more
+capable restoration model; PULSE is for light degradation, clean upscaling,
+browser/CPU use, and cases where the model itself must be almost free.
+
+PULSE is not competing with HEART on PSNR.
 
 ## Pick a model