Inconsistent computer analysis

DK81
DK81
Jul 18, 2012, 9:20 AM |
2

I submitted a recent game for computer analysis with the first four moves as follows:

1.  f4   d5

2.  Nf3   Nf6

3.  d4    c5

4.  e3   Bg4

The suggested alternative to 4. ….. Bg4 was 4 ….. Nc6

Later I submitted a second game for computer analysis with the same initial moves (but in a different sequence), and the suggested alternative to 4. ….. Bg4 was 4. ….. cxd4

Thus, the computer analysis seems to be inconsistent, treating identical positions differently.  Comments are awaited!