I have not seen an R9 of 90+ on an LH351d before
it is nominally a 9050 LED, whereas the SST-20, 219b, and E21a are 9080 variants
the red bar is shorter on LH351d, than on 219b, sst-20, and E21a:
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look also at the DUV for each LED… the SST in this case, is greener tinted (higher DUV, farther above the BBL) than the LH351d (varies by CCT also)
additional food for thought
compare R9, R10, R11 bars (red, yellow, green)
notice the red bar is not shorter than the yellow and green on the 219b, iow it has the most consistent red, yellow, green color rendering capability
the yellow and green are taller than the red on the LH351d, iow it renders yellow and green, better than red
the green bar is taller than the red in the SST-20, iow, it renders green better than red and yellow
photos of plants tend to lack yellow and red targets, they tend to be rich in greens. trivia… plants look really green under low cri light, it does not reveal red pigments at all