The weapon stats are broken. They number they display for "Matches", "Accuracy" and "Time Equipped" is highly inaccurate. I can only assume that the "Fired", "Hit", and "Damage" are also inaccurate, but I've studied my and other players weapon stats extensively, and I've found those numbers to be more reliable. (plus, the samples are much larger, so errors are more easily discounted)
If you want to gauge how well you are doing with a weapon, try this formula
Damage ÷ [ Shots Fired × Potential Damage Per Shot ]
For instance, look at my IS medium laser.
369,105 (damage I have done) ÷ [ 189,111 (number of times I've fired a Medium Laser) × 5 (amount of damage a medium should deal) ]
= 369,105 (damage I have done) ÷ 945,555 (total damage I could have potentially done)
= 0.390358044
= 39% efficiency
Note that the "potential damage per shot" is handled differently for many weapons. For an AC/20, it's "20". For a cERLL, it's "11". For a Clan SRM4, it's "8", for an Inner Sphere SRM4, it's "8.6". For LRMs, it's "1". For stuff like MGs and Flamers, I haven't bothered to figure it out.
I find it useful to compare like weapons. So I compare all my lasers to each other, and I compare all my autocannons to each other, and see where I'm weakest and strongest. It's all about dealing the maximum damage per shot. The closer you are to a final value of 1.0 (100%), the more efficient you are at using that weapon. You'll find that many of your numbers will range between 30% and 60%, and rarely above 60%. Usually people who are very careful with their gauss and AC/20 shots will have 75% with those weapons.
(oh, and by the way, the "Accuracy" shown on the stats page for lasers, is worthless. If you fire a medium laser and only graze an enemy mech with it, dealing 0.00001 damage, it still counts as a solid hit for the stats counter. So again... worthless. Use the formula.
)
Yes, I already have a spreadsheet for this if you're really interested.
Edited by Tarogato, 16 June 2015 - 05:25 AM.