If you google IP gains per win, they list 100 for a 37 minute win and 68 for a 37 minute loss. If you go 5-5, that's 168 x 5 = 840, plus 150 for your first win of the day, so 990 total. That's slightly more than the shard you got.
However, those numbers were presumably chosen because 100 IP is a nice round number. Currently, the average game time is 30 minutes or less.
https://www.leagueofgraphs.com/rankings/game-durations
At 30 minutes you get 10-12 less IP per game than at 37. That puts your ten games around 870. Assuming you're level 30, bot games offer 75%, which would add around 110 more, for 980. Ergo, you would have received about the same IP in the old system for those games as your Zyra shard is worth in the new system.
These numbers are obviously a bit estimated, and assume you have average game lengths, but everything seems in line.
Now, if the amount of XP you need per level increases and the rewards don't improve, that becomes more problematic, but that's a problem when it shows itself to be a problem.