Pros:
Spread seems to be slightly better.
Armour penetration got better.
Cons:
Damage got redeced too much, it seems to be somewhere between bb4-5 damage range.
I did some fire testing with my friend, kaiser to kaiser side to side @ 40 degree angle.
Our 100% hit salwos on live server was:
39943 41921 34432 38003 46077 46656 50091 49905 49992 49069 49530 44666 44646 44322 41707 40090 41986
Which gives 44296 medium damage.
To compare we have tested also other bb6.
Nebraska:
44557 55105 56940 50694 49080 54811 45270 51837 56745 56778 53827 46629 56982 50096 56715 54771 56499 61673
Which gives 53278 medium damage.
P24:
73617 73512 62895 63912 47660 59702 53887 63624 63618 46592 62514 54562 62400 63546 62664 62913 63909 51169 62024
Which gives 60774 medium damage.
Amagi:
63630 62650 50382 61750 57968 61660 53370 63462 62640 59403 64090 53730 57017 61560 56268 50991
Which gives 58785 medium damage.
Charlemagne:
65706 52535 67107 67426 67721 61679 48496 71160 67510 67549 67346 70692 71421 71163
Which gives 65536 medium damage (real damage might be higher due to the high number of oneshoots that has occured during testing).
Queen Victoria:
51117 55857 53161 56370 52185 44288 51732 41590 49245 54951 55857 42182 47993 55704 55206 56415 50367 55959 43759
Which give 51260 medium damage.
Progetto UP41:
41636 54873 47825 55662 54573 42753 45901 49897 55266 48573 55368 45081 55368 49735 54873 51848
Which gives 50577 medium damage.
In my opinion Kaiser's damage should get buffed so the medium damage would be somewhere around 50k, right now it's awful. It's not a punch it's a slap...
I've played few GBs and I felt like i would play bb3-4 with bb6 range :/
If someone use his brain and manuver it's realy very unlike to land a 100% salvo from Kaiser, even after it's spread buff, which means that you can count on something around 20k damage max, which in my opinion is poor.
On the other hand Nebraska used to be good HA fighter against armoured oponents. Right now it may have some hard time fulfiling this role after decreasing shell mass from 1750 to 1480. (11.6" deck L2 absolutely bounced all of my salvos).