Volume of a sphere V = ⁴/₃πr³
EMP fraction smartbomb (large) damage volume 4/3 * 3,14 * 7,5 * 7,5 * 7,5 = 1766 km3
Explosive fraction smartbomb (large) damage volume 4/3 * 3,14 * 6 * 6 * 6 = 904 km3
If we compare the volumes, then EMP is 1.95 times larger than Explosive. But damage of Explosive smartbomb is 120% from EMP.
In new realm of PvE where nps in combat sites spawned around 15-20 km line range of smartbombs looks is a more important factor.
I test EMP and Explosive smartpacks in Sansha and Angel nullsecs, and looks Explosive SB not enoth of range and need little up from 6 km to 6,5-7 km. What do you think about that?