All of the MK strats have an Ash body and a Maple neck with a Rosewood fingerboard. It is a known fact that different guitar bodies, cut to the same size, out of the same species of wood, can vary in weight. (and Ash comes in different varieties!) On some guitar forums ( specifically the Les Paul Forum) it is a major talking point as Les Pauls are comparatively heavy guitars and the lighter ones are valued by players with bad backs who have to stand & play them for extended periods. ( There is also another argument about whether the tone of lighter guitars is better or worse than heavier guitars!!)
You might think with an electric guitar it's all in the pickups, but some very knowledgeable people say that the wood the guitar is made of will also affect the sound it produces. Knopflerfan clearly can tell the differences between his 3 MK Strats.
I have 3 quite different Strats: The MK sig model strung with 9's, A late 1980's (Made in Japan) Fender Strat with a Basswood body & maple neck/fingerboard, strung with 9's, and a (Made in Mexico) Fender Classic Player 50's Strat with an Alder body & Maple neck/fingerboard, strung with 10's and with the tremolo operational. the different pickups & wood combinations make them noticeably different flavours of "Strat"
- I use the MK model for solo material, the Japanese model with "Tonerider Pure vintage" pickups for early Dire Straits, & the Mexican model which has 50's "voiced" pickups for things which Mark has used his '54 Strat on or a tremolo is needed. ( Shangri La or So Far Away etc).