get-process cmdlet in V2 CTP2

I have been testing the CTP2 of Powershell and have noticed something
interesting. The cmdlets get-process and get-service now have a '-
ComputerName' parameter, but I can't get certain information using
that parameter. The function I wrote is:

function get-ProcessSnapshot( [string]$computer = "." ) {
Clear-Host
write-host $([datetime]::now)

$name = @{ label = "Process Name" ; expression = { $_.name } ; width
= 20 }
$id = @{ label = "PID" ; expression = { $_.id } }
$memory = @{ label = "Memory(MB)" ; expression = { $_.ws/1kb } ;
format = "{0:N0}" }
$cpu = @{ label = "CPU(Sec)" ; expression = { $_.cpu } ; format =
"{0:N}" }
$responding = @{ label = "Responding" ; expression =
{ $_.responding } }
$fields = $name,$id,$memory,$cpu,$responding
get-process -ComputerName $computer | sort ws -desc | format-table
$fields
}

I use this for taking periodic snapshots of various machines on our
domain. If I call it with no parameters, it has no issues populating
all of the fields for my computer. If I pass it the name of any other
computer (I have admin rights to all of these boxes), the $_.cpu and
$_.responding fields come up blank for every process in the list. Any
ideas as to why this behavior occurs? ... or if there is a better way
to get this information?

Thanks in advance.