Why? Is the Level IV Center program that good? The IBMYP that bad? Something else?
I'm not sure I agree with the above poster, but they may be implying that the IBMYP is interpreted and administrated solely by the individual school, so how good or bad the program is depends more on the individual teacher and school. The IB diploma requires specifics, including outside evaluators, and is more standardized than the MYP program, unless the MYP voluntarily participates in outside evaluations. This is a question for any school that has the MYP program, as well as what stage in the process of adoption the MYP program is.
I don't know if the Level IV centers are more standardized, but that would be a major difference between the two.
Of course, the PP might be talking about something else entirely in their recommendation and will surely pop back in to tell me I don't know what I'm talking about. This is what makes the internet great. GL, OP.