Absolutely. Paint is paint

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I know that you mean this "tongue in cheek" but not all paints are created equally...
What we refer to generically as "paint" is essentially a suspension of a particulate ( the pigment) in a liquid ( the medium).
The pigment gives the colour and the medium usually gives the finish (Matt/gloss etc).
The pigment may be natural or man-made, today's pigments are often synthetic acrylics - essentially coloured plastic.
The particle size of the pigment and pigment to medium ratio varies considerably between brands and intended use.
The medium is what we often use to distinguish different paint types - enamel/lacquer/oil/"acrylic" - but in many cases the pigment will be similar or identical. The medium influences both the working qualities of the paint ( brushing/spraying/drying time) and the final finish.
Cheap "craft" paints often have poor pigment consistency and mix ratio - they can vary hugely between different colours and even between different batches of the same colour. Higher quality "artist's" paints are much more consistent ( and expensive).
Modelling specific brands should be far more predictable across ranges and batches - although this isn't always the case - and as has been mentioned they usually have pre-mixed colours relevant to model use.
Some folks swear by particular brands, others swear at them. Personally I use all of the major brands (Tamiya/Mr Colour/Vallejo/MIG etc) but tend to prefer one brand's colour over another in specific cases.