The largest difference (deltaE 1976) I see seems associated with the yellow channel. I'm using dE76 because it's more aligned with ink density while dE2k changes that to human perceptual differences. Note that the dE2k for this was 1.08.
Largest dE76 was 4.2, Lab1: (91.52, -10.76, 69.90) Lab2: (91.69, -10.62, 65.66) RGB:255,255,95
The shift is also in the greens which uses a lot of yellow ink but produces higher dE2k though lower dE76.
Might be some process difference. I would run at least 5 letter size pages of profile charts through each printer then print profiling charts and make profiles from that. I've seen differences like that on my Epson 9800 when the printer hasn't been used a lot for a week or so. I have a Canon Pro1000 and it also exhibits shifts over about 2 pages when not used for a week. And nozzle checks won't show this.
This can result in an apparent dot gain. Here's the full list of the Yellow channel desaturated over the range of full to none(unprinted)
95.06 -1.05 -2.20 95.11 -1.02 -2.08 255 255 255
94.08 -4.01 11.25 93.97 -3.96 10.91 255 255 223
93.25 -6.85 26.81 93.16 -6.63 25.23 255 255 191
92.62 -9.02 41.94 92.72 -8.74 39.80 255 255 159
92.11 -10.07 55.57 92.18 -10.00 53.13 255 255 127
91.52 -10.76 69.90 91.69 -10.62 65.66 255 255 95
90.87 -10.94 83.56 91.11 -11.08 80.43 255 255 63
90.09 -10.20 97.82 90.17 -10.60 95.67 255 255 31
88.49 -4.89 109.13 88.63 -5.53 108.83 255 255 0