Phased kit different from either kit on GEDMatch?

[JQP4545]

Why would a phased kit have ethnic groups that don't show up on either someone's kit or their parent's kit? For example, that phased kit for my maternal inheritance always shows a good bit of Russian, but there is no Russian on either mine or my mother's kit. Which one is more accurate?

[JQP4545]

MDLP World 22:

Pct. Calc. Option 1

1 British 34.42%
2 German-South 26.82%
3 French 16.75%
4 Russian 16.23%
5 Kosovar 5.78%
6 Romania 0.00%
7 Swiss 0.00%
8 Provancestralal 0.00%
9 Montenegrin 0.00%
10 Italian_North 0.00%

HarappaWorld Results:


Pct. Calc. Option 1

1 french 50.90%
2 russian 28.32%
3 basque 17.63%
4 italian 2.32%
5 bulgarian 0.81%
6 tuscan 0.01%
7 tuscan 0.01%
8 spaniard 0.00%
9 tuscan 0.00%
10 spaniard 0.00%

Dodecad K12b Results:


Pct. Calc. Option 1

1 French 81.86%
2 Russian_B 11.76%
3 North_Italian 6.31%
4 Bulgarians 0.03%
5 TSI30 0.02%
6 Bulgarian 0.02%
7 Romanians 0.00%
8 N_Italian 0.00%
9 Nogais 0.00%
10 Tuscan 0.00%

[JQP4545]

Eurogenes K15:

Pct. Calc. Option 1

1 Southwest_English 48.93%
2 French_Basque 29.22%
3 North_Swedish 20.89%
4 Moldavian 0.96%
5 Hungarian 0.00%
6 South_Dutch 0.00%
7 Serbian 0.00%
8 Croatian 0.00%
9 Romanian 0.00%
10 Bulgarian 0.00%