Wouldn't really consider the BAR to only be valued at 10k higher than the sawed AK when its only real disadvantage is in the 0.03 less freeze. Not only that but it would also put the BAR into the same category as the M107 priced at 107k and they are far from being equal competitors. 0.39 firerate is a fairly slow firerate, and 0.09 is considerably higher than the BAR especially when you consider how 'drastically' people see the BARs firerate reduction to be, which was of a decrease of 0.06, 0.03 less than the gap between the BAR and Sawed AK. Pair that with the fact that it has 0 spread makes the Sawed AK a very easy weapon to dodge. The only way a sawed Ak would have a chance is if they got in close which then leaves them open to being out damaged by the BARS higher firerate.

Those stats also aren't taking into account clip size and reload sleep. The BAR has 4 more bullets, and because of the low firerate of the sawed AK, they only have a 0.11 gap to run up to the bar user (who usually runs away from the opponent to reload aswell, resulting in an even greater time distance) and shoot them which in a practical scenario is not enough time unless the BAR user run out of ammo during their shooting.
In terms of reload whilst the sawed AK might initially be faster on the reload freeze, its sleep reload is higher which more or less evens the two guns out in terms of the time period until both guns can begin to shoot again after reloading.

I still stand by the BAR being worth 200k, it is just seen that the bar nerf has devalued the gun because they were used to how strong the BAR was. Remember the BARs INITIAL price set based on its statistics was actually 250k, with the price later being reduced to 200k not because of a stat reduction but to make the price less intimitading to buyers.
The actual fact is the BAR nerf it just recieved is reducing its 250k equivilant stats to 200k as it is currently sold. As the stats were never reduced when the price was, it effectively means that the BAR you had bought and used was worth more than the price you got it for

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As for the Metalstorm, the statistics for that particular gun aren't representative of its performance. For whatever reason 0.16 freeze to 0.15 makes a significant difference the same way the firerate statistic from 0.29-0.3 also makes a significantly higher difference than the 0.01 it should only be. The freeze on the metalstorm when used feels closer to the 0.18-0.19 range giving it extremely low mobility when spam fired.

I'm still yet to see many people using it post nerf, or people that I have seen use it actually do well with it leaving it out of the rebalance for the first week was not an oversight it was intentional