Aliona Layouts:
SP:
Aliona new: 3A 3Lz 3F-3T
Aliona old: 2A 3Lz 3F-3T
FS:
Aliona new: 3A-2T 3A 2A 3Lo 3F-3T 3F-eu-3S 3Lz
Aliona old: 3Lz-2T 2A 2A 3Lo 3F-3T 3F-eu-3S 3Lz
Aliona replaces 2A, 2A, 3Lz for 3 3As. 11.5-->24.
Anna Layouts:
FS:
Anna new: 4Lz-3T 4Lz 4F 2A 3Lz-3Lo 3F-eu-3S 3Lz
Anna old (Alina layout): 2A-3T 3S 3F 2A 3Lz-3Lo 3F-2T-2Lo 3Lz
More confusing, but Anna replaces 2A, 2T-2Lo, 3F for 4Lz, 4Lz, 4F and -eu-. 11.6-->34.5
I hope my maths is correct, but even if Aliona switched out her 2A for 4S, Anna would still have a roughly 4 point lead in BV.
Your maths is weirdly correct but at the same time it's not. It gives you some numbers, but not base value lead.
Alena sp: 3A, 3Lz, 3F+3Tx(total BV 8 + 5.9 + 10.45 = 24.35 for SP jumps).
Anna sp: 2A, 3F, 3Lz+3Lox ( total BV: 3.3, 5.3, 11.88 =20.48 for SP jumps).
It's reasonable Alena will get +'s on all jumps and Anna will too under normal circumstances, giving Alena extra advantage there based on higher scale factor for the triple axel.
FP:
Alena( 3A+3T, 3A, 2A, 3Lo, 3F+3Tx, 3F+EU+3Sx, 3Lzx = 12.2, 8, 3.3, 4.9, 10.45, 11.1, 6.49 =56.44 total Jump BV)
Anna: 4F+3T, 4Lz, 4F, 2A, 3Lz+3Lox, 3F+EU+3Sx,3Lzx = 15.2+11.5+11+3.3+11.88+11.1+6.49= 70.47)
Anna has a whopping advantage of 14.03 in the FP, and only a loss of 3.87 in FP (partly due to Kostornias loss of +3Lo combo).
In SP and FP kostornaia tends to be 2PCS points ahead (in SP) and 4PCS points in FP so that's -6pts to Anna. (On average)
14.03 -6 -3.87 = 4.16 ahead of Kostornaia if they both skated clean (Anna having two different types of quad and Kostornia just having 3A).
Base value wise Anna is looking at 10.16 ahead of Kostornaia given equal spins steps and choreo sequence , however that depends on both skaters going perfectly clean. GOE makes this a lot more complicated, and this advantage is basically gone if Anna falls and UR one quad).
It's going to be close, and at the risk of sounding cliche:
"Their battle will be legendary."
Of course Trusova can go clean and beat them both. You never know