Mike, the Javelwin is only as damaging as an RPG if you are hitting tanx from the sides, back or front.
The only way to hit tanx effectively and stop them almost instantly with it is to have the targets painted by a SOFLAM.
The Javelwin will lock on from anywhere, and will travel straight up, then straight down onto your target, pretty much destroying it from above.
I'd love to be in a round where someone on my team is painting targets and I am taking them out.
Strike at Karkand or Gulf of Oman would be good maps for it.
Also, I use the EXPL perk when I use RPG's or Javelwins, as you get loads more ammo.
I had a game at Gulf of Oman the other day, and I climbed the crane at the construction site.
Was using the Javelwin from up there, as I knew no-one would be SOFLAMing, and it was taking tanx out in 1-2 shots, from above.
I need team mates!

👍