What bat is better the Carlton vapour trail r4 or the r6. The r6 is more expensive but the r4 has a higher overall rating?

https://www.sportsdirect.com/carlton-vapour-trail-r4-table-tennis-bat-777024?colcode=77702490&gclid=Cj0KCQjwrpLoBRD_ARIsAJd0BIUmlpKqJ54iLriWiSqJDmxCbwJmH9tkUtAE-79mjmkennKSqDWpKY4aAiNGEALw_wcB. R4

https://www.sportsdirect.com/carlton-vapour-trail-r6-table-tennis-bat-777025?colcode=77702590 r6
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