The rise of Melta Weapons

We are about a year out since the release of 5th edition for 40k.
In the many games that I have played I have noticed the trend; people love Melta Weapons.

I thought to myself, not unusual, it is certainly better than Plasma at killing Vehicles.
Then I began to see the Multi-Melta as the heavy weapon of choice among Tactical Squads and Dreadnoughts.

I thought I would investigate. I computed the chance for a certain strength weapon to Destroy (Wrecked or Exploded) a vehicle it was shot at, based on Armor Value.

This is what I came up with..
I realize that the chart is a bit hard to read.
I will explain the trends that I found. Remember, the values represent a chance to destroy a vehicle, not just damage it.

First we see that the melta (outside of 1/2 range) dominates all other weapons at AV 10.
At AV 11-13 only Str 10 weapons perform better while the Melta performs better or equal to a Str 9 weapon (like a Lascannon). Only at AV 14 do Str 9 and 10 weapons outperform a melta weapon.

Obviously, when a melta weapon gets within 1/2 range, it eclipses other weapons (sometimes outperforming them by integer multiples) *Except in the case of Monoliths. When you add in Twin-linking (Vulkan) it just gets ridiculous. Aside from the Monolith, the chance to destroy a vehicle with a melta weapon within half its range is never less than 25% and rises to almost 50% on the lower end.

The worst part is, the lascannon costs more points then the Multi-Melta. When I play Blood Angels, I run 4 Lascannons in my tactical squads. It think that is about to change.

-Mike