UtterDisbelief
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When I used the SSDT-EHCx-OFF.aml or SSDT-EHCx-DISABLE.aml table I found that all the EHCx ports were available on the XHC1 or XHCI controller, i.e. 14 x HSxx ports and 6 x SS0x ports, with the 2 x USB Hubs included within those ports.
The Intel H97 only has a maximum 14x physical USB ports, period, not the old 15x from each controller mantra. So how the DSDT is configured will dictate if the EHCI/XHCI ports are muxed or not.
If USB2 only comes from EHCI then we would need to see IORegistryExplorer in action to tell.