Clashing Tones/Frequencies when having different Cents?

[Caine123]

hi guys, oh man i never cared in the past much about this and learned so much throughout the years and i used a lot the MASTER PITCH in FL Studio and wondered myself WHY this affects a lot of VSTs and instances differently. e.g. i got Project A:

1x Sylenth1
3x Gladiator 2
2x Nexus 2

Sylenth1 is PB (Pitchbend Range) = 2
Gladiator PB = 12
Nexus 2 = 2

Master Pitch is set to -100 Cents

Gladiator is then exactly -1 Semi
Sylenth1 and Nexus 2 are around or exaclty -20 Cents (if i checked correctly.)

so the notes from Sylenth1 and Nexus 2 are slightly out of tune?

by ear it sounds not faulty, but still ok, still what is your experience, better set them also the same range and correct the Cents/notes? of course with just -20 Cents it is not so drastic, but with -50 Cents it gets not well together.