Pass data to powershell script

I am working with a PowerShell script which needs to take data from a file and use them as parameters to the functions written in it. So basically what I am looking for is something like a JSON or XML file but I am not sure about what to use.

What I am looking for is the one which is relatively easier to use, passes datatypes or objects instead of strings.

A part of data would look something like this in XML :

<RegistryEntriesList>
<registryPath>HKLM:\\Software\\Lenovo\\Configuration\\</registryPath> <registryProperty>PATH </registryProperty>
<registryPath>HKLM:\\Software\\Lenovo\\Configuration\\</registryPath> <registryProperty>LOGS </registryProperty>
<registryPath>HKLM:\\Software\\Lenovo\\Connections\\</registryPath> <registryProperty>MinConnectionsPerTarget</registryProperty>
<registryPath>HKLM:\\Software\\Lenovo\\Connections\\</registryPath> <registryProperty>MaxWorkingIscsiConnections</registryProperty>
<registryPath>HKLM:\\Software\\Lenovo\\Connections\\</registryPath> <registryProperty>WaitIntervalInMilliseconds</registryProperty>

Another part would like this in JSON:

"entredInput":[{"title":"Powershell","desc":"first"},
      {"title":"json","desc":"third"},
      {"title":"Configfile","desc":"second"}]

And many more like this.

Basically I would be using these for automation purpose. I know PowerShell4.0 alone has the cmdlet ConvertFrom-JSON but it dosent work on PS2.0 and I want my script to run on any version of PowerShell, i.e any release of Windows. So I guess XML might be a better option but I am not sure. Is there any other option ??

I have gone through many weblinks about JSON vs XML and they have only confused me a lot. Kindly let me select a better option among JSON, XML and SOMETHINGELSE. Thanks for going through the question.