Overclocks aren't guaranteed even on a overclocking oriented card.  But I'm getting +110 on the Core and +1100 on my Mem on my RTX 2070 FTW3 Ultra OC card.

I have a 2080 XC Ultra and getting +600/+130 stable

I bought Rtx 2080 XC Ultra on release and it is a great card and its max OC Mhz is 2100 Mhz. Most times though it is between 2070 and 2088 Mhz (depending on temp). Put the 2080 into my sons new PC build and bought a Rtx 2080 Super FTW3 Hybrid, it can hit 2160 Mhz max and drops a little if temps go up. Very happy I got a nice OCer this time. It all comes down to silicon lottery, no guarantees. Honestly, you will not even notice the difference in Fps between 2025 mhz and 2150 mhz (like 2 or 3 fps difference max). Funny thing I usually run my Gpu stock and only OC when I do Bench a Thons.  Enjoy your card and play lots of games.
 
*Edit* 
I just wanted to add my 2080 Super FTW3 Hybrid mem clocks to 900 max before artifacts. So I am not hitting the magical 1200 that you spoke about. The only binned chips are the KP (KingPin) edition cards, all the rest you play the silicon lottery for your mem and core clocks. The main reason to buy the higher priced cards is generally cooler temps, 3 fans over 2 fan models, thicker heatsinks to run cooler and generally the sound is better. I almost always buy the FTW models and always buy EVGA cards for all my Gpus (and power supplies). Enjoy your card while playing games, 100 Mhz less in the real world means almost nothing.

Now worries my specs are:

9700k
MSI Z390 pro carbon
16gb corsair vengeance pro rgb
Rtx 2080 super ftw3 ultra
2 x nvme drives
2 x data ssd
1 x mech hdd
Corsair Commander pro
4 rgb strips
4 x coralir ML140 pro RGB fans
1 stock 140mm fan
Corsair H115i platinum
Evga g2 1000

When I chose this card I was under the impression that these are binned chips which is why they are the top of the line cards vs the cheaper models