Article Mistake corrections

http://mybroadband.co.za/news/hardw...k-printers-say-goodbye-to-ink-cartridges.html
WorkForce Pro WF-R4640 EcoTank All-in-One – for the small business, with an in-box ink yield of up to 20,000 black and 20,000 colour pages and print speeds of up to 20 ISO ppm (black) and 20 ISO ppm (colour) +.

Is that a mistake? Surely it shouldn't be able to print 20 pages per minute in colour as well as 20 pages per minute in black.

EDIT: Perhaps not, I see it's like that on their webpage also. Just thought it can't be right since the colour print speed for all the other models are slower than the black print speed.
 
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