∆E tolerance is something that is agreed between the printer and the client, it doesn't necessary depend on the printing method. If the printer claim's to print within the tolerances of eg ISO 12647-2:2013 and the client agrees with this in the qoute, then the tolerances of the printed job shall be inside 12647-2:2013. If not, the client should have the right to decline the job.
So the answer to your question can be between 0,1 - 100 ∆E (it depends).