Hi. I have recently owned a Scro 1212L for 8 months and now I own a Berg AE210, so I think to be able to compare these two side by side.
When discussing on sounds, it is always better to specify the technique, genre etc. I play my own music, that is a sort of ambient rock with massive use of leading fingerstyle basslines and piano, synths, eventually guitar etc. A complex mix to cut. I play a Mayones, a Warwick and a Fender jazz trough a Thunderfunk 550B head.
Scroeder 1212L: very aggressive, the sound is raw, in your face, with a detectable bump in the frequency response ranging from 220 to 500 Hz (I mean, 10-12 dB of bump over the flat response!). This response is achieved mainly by a proprietary construction, resembling a smaller cab. the human ear is very sensitive to midrange frequencies, and so you can hear a very loud sound (efficiency), with great capability to cut trough any mix and hear the pitch of the notes you play. The counterside is that the Scroeder is a one trick pony, you have this particular sound, and only this. If you are not an audiophile guy and prefer to play with the two PUs perfectly blended with a standard powerful rock sound, it can be ok. But do not try to solo the bridge PU for a Jaco tone, because you will hear the same sound as previous, only weaker in the lows. Moreover, the cab in effect lacks some bottom-no pillowy supporting sound here no matter how much bass you are able to boost with your electronics/amps. Moreover, with this kind of frequency personality and humps, certain notes resonate at higher perceived levels compared to other, no matter what dynamic processor you use, because one certain note has the fundamental frequency that is enhanced by that bump in the low mids.
Bergantino AE210: broader than Schro, with a solid performance in the bass register, a huge sound but refined with a upper midrange-highs definition. The sound is not like any other cab loaded with Neodimium that I have tried. The bass is solid and supporting, even with one cab. The mids are transparent and the overall frequency response is more hi-fi and precise compared to Schroder. This sound is not sterile at all and reacts beautifully with every PU position and Eq setting. In effect, with the Berg you can clearly hear any change in your sound, even the smallest and the cab is a chamaleon. It can roar with a neck PU like a vintage Precision, or produce a Jacoesque sound, or even a pillowy dub sound, mainly changing only the technique on the bass. Slap is gorgeous but I do not slap very much, prefering a warm traditional sound. Yes, warm sound with Neodimium.