I have one distant cousin, double 5th, who shows a lot of cM, but varies considerably across the sites. Mostly due to how X is counted (or if it's counted).

3 segments - Chr 7, X1 and x2

FTDNA
chr 7 - 15.1
X1 46.77
X2 11.74
Total 41 autosomal only
Rank 542 out of 2009, 3rd to 5th

23andMe
Chr 7 17.7
X1 49.86
X2 8.21
Total 1.02%, abt 76 autosomal + X
Rank #2 out of 1374, 3rd to 4th

GedMatch (both kits from FTDNA)
Chr 7 18.8
X1 47.0
X2 12.4
Total 18.8 autosomal only
Rank about 500 out of 2000, 4.7 gen (3rd to 4th)

Total @ 1 cM (31 segments) like FTDNA (14 segments)
Total 81.2

AncestryDNA
NOT a match. Therefore <6 autosomal/phased. No X counted
Included in a DNA Circle.
Was a match, pre-Timber.

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So the Big Picture is similar except at AncestryDNA. Since 23andMe does count X, my rank pops up to #2 there.

If I were to nitpick, there are a lot of differences in the lengths and totals. More than I like. For instance, 23andMe is higher on X1 but lower on X2. And GedMatch picks up a lot more of the tiny segments than FTDNA, even though both kits were from FTDNA.

Although I did not include START and STOP points, they were extremely similar. Slightly different for 23andMe.