Same value in 2 files are different when compared VBA - string

Question

I'm trying to compared 2 different excel files that contain same fields sometimes.
When I find it (by watch view) the vba say they are different...
Dim ctrl As Integer
Sub btnCheck_Click()
Dim lot As Workbook, pr As Workbook, this As Workbook
Dim a As Variant, b As Variant
Dim i As Integer, j As Integer
Dim passed As Boolean
Set this = Application.ThisWorkbook
this.Worksheets(1).Range("C5:J1000").ClearContents
Application.ScreenUpdating = False
a = ThisWorkbook.Path & "\" & "A.xlsx"
Set lot = Application.Workbooks.Open(a, False, False)
b = ThisWorkbook.Path & "\" & "B.xls"
Set pr = Application.Workbooks.Open(b, False, False)
i = 2
x = 2
lin = 2
Do Until lot.Worksheets(1).Range("A" & i).Value = ""
passed = False
j = 2
Do Until pr.Worksheets(1).Range("A" & j).Value = ""
If lot.Worksheets(1).Range("B" & i).Value = pr.Worksheets(1).Range("C" & j).Value Then
passed = True
this.Worksheets(1).Range("D" & x).Value = "ok"
x = x + 2
End If
j = j + 1
Loop
i = i + 1
Loop
lot.Close True
Set lot = Nothing
pr.Close True
Set pr = Nothing
Application.ScreenUpdating = True
End Sub
Function CleanStr(ByVal str As String)
CleanStr = Replace(str, Chr$(32), "")
End Function
The files A and B are linked at the comments bellow.

Answer 1

A and B are not the same. One ends in a space (ASCII 32) while the other ends in a non-breaking space (ASCII 160). Invisible is invisible to our eyes, but to a computer, ASCII(32)<>ASCII(160)
You can verify this by adding this function to your macro:
Function strings2ascii(ByVal str1 As String, str2 As String)
Dim x As Integer
Dim intStrLen As Integer
Dim strResult As String
If Len(str1) > Len(str2) Then
intStrLen = Len(str1)
Else
intStrLen = Len(str2)
End If
For x = 1 To Len(str1)
strResult = strResult & Asc(Mid(str1, x, 1)) & ":" & Asc(Mid(str2, x, 1)) & vbCrLf
Next
MsgBox strResult
End Function
Now call this function in your loop:
Do Until pr.Worksheets(1).Range("A" & j).Value = ""
strings2ascii lot.Worksheets(1).Range("B" & i).Value, pr.Worksheets(1).Range("C" & j).Value
If lot.Worksheets(1).Range("B" & i).Value = pr.Worksheets(1).Range("C" & j).Value Then
You will immediately see that they never match because they are not the same. Here is a similar SO post regarding ASCII 160 errors: Trouble replacing Chr(160) with VBA in excel

Answer 2

Not sure if this will answer the question but that can't stand in a comment :)
I would say that some cells contains invisible chars that arent spaces.
Here's a recursive function that remove them from a string :
Function CleanString(StrIn As String) As String
' "Cleans" a string by removing embedded control (non-printable)
' characters, including carriage returns and linefeeds.
' Does not remove special characters like symbols, international
' characters, etc. This function runs recursively, each call
' removing one embedded character
Dim iCh As Integer
CleanString = StrIn
For iCh = 1 To Len(StrIn)
If Asc(Mid(StrIn, iCh, 1)) < 32 Then
'remove special character
CleanString = Left(StrIn, iCh - 1) & CleanString(Mid(StrIn, iCh + 1))
Exit Function
End If
Next iCh
End Function
Give it a try like this :
Do Until b.Worksheets(1).Range("A" & j).Value = ""
sa = CleanString(a.Worksheets(1).Range("B" & i).Value)
sb = CleanString(b.Worksheets(1).Range("C" & j).Value)
oa = CleanString(a.Worksheets(1).Range("E" & i).Value)
ob = CleanString(b.Worksheets(1).Range("F" & j).Value)
If StrComp(sa, sb) = 0 And StrComp(oa, ob) = 0 Then
Passed = True