Not the same.

todd@todd-Latitude-E6420:~$ sudo mount -t auto /dev/sda2 /mnt
todd@todd-Latitude-E6420:~$ ls -la /mnt
total 5811870
drwxrwxrwx  1 root root      16384 Oct 11 13:17 .
drwxr-xr-x 24 root root       4096 Oct 12 08:07 ..
-rwxrwxrwx  1 root root         24 Jun 10  2009 autoexec.bat
drwxrwxrwx  1 root root       4096 Oct 26  2011 BBH_Software
drwxrwxrwx  1 root root          0 May  8 21:18 BHFILES
drwxrwxrwx  1 root root       8192 Sep 15 23:30 Boot
-rwxrwxrwx  1 root root     383786 Nov 20  2010 bootmgr
drwxrwxrwx  1 root root      16384 Oct 11 13:17 Config.Msi
-rwxrwxrwx  1 root root         10 Jun 10  2009 config.sys
drwxrwxrwx  1 root root          0 Sep 16 17:38 dell
lrwxrwxrwx  2 root root         60 Jul 14  2009 Documents and Settings -> /mnt/Users
drwxrwxrwx  1 root root          0 Oct 25  2011 Drivers
-rwxrwxrwx  1 root root     558835 Sep 17 10:28 drivers.log
-rwxrwxrwx  2 root root      17734 Nov  7  2007 eula.1028.txt
-rwxrwxrwx  2 root root      17734 Nov  7  2007 eula.1031.txt
-rwxrwxrwx  2 root root      10134 Nov  7  2007 eula.1033.txt
-rwxrwxrwx  2 root root      17734 Nov  7  2007 eula.1036.txt
-rwxrwxrwx  2 root root      17734 Nov  7  2007 eula.1040.txt
-rwxrwxrwx  2 root root        118 Nov  7  2007 eula.1041.txt
-rwxrwxrwx  2 root root      17734 Nov  7  2007 eula.1042.txt
-rwxrwxrwx  2 root root      17734 Nov  7  2007 eula.2052.txt
-rwxrwxrwx  2 root root      17734 Nov  7  2007 eula.3082.txt
-rwxrwxrwx  2 root root       1853 Oct 26  2011 freefallprotection.log
-rwxrwxrwx  1 root root       1110 Nov  7  2007 globdata.ini
-rwxrwxrwx  1 root root 2548744192 Oct 11 16:33 hiberfil.sys
drwxrwxrwx  1 root root          0 Oct 25  2011 Hotfix
-rwxrwxrwx  1 root root     562688 Nov  7  2007 install.exe
-rwxrwxrwx  1 root root        843 Nov  7  2007 install.ini
-rwxrwxrwx  2 root root      76304 Nov  7  2007 install.res.1028.dll
-rwxrwxrwx  2 root root      96272 Nov  7  2007 install.res.1031.dll
-rwxrwxrwx  2 root root      91152 Nov  7  2007 install.res.1033.dll
-rwxrwxrwx  2 root root      97296 Nov  7  2007 install.res.1036.dll
-rwxrwxrwx  2 root root      95248 Nov  7  2007 install.res.1040.dll
-rwxrwxrwx  2 root root      81424 Nov  7  2007 install.res.1041.dll
-rwxrwxrwx  2 root root      79888 Nov  7  2007 install.res.1042.dll
-rwxrwxrwx  2 root root      75792 Nov  7  2007 install.res.2052.dll
-rwxrwxrwx  2 root root      96272 Nov  7  2007 install.res.3082.dll
drwxrwxrwx  1 root root          0 Sep 16 17:39 Intel
-rwxrwxrwx  1 root root          0 Jan 31  2012 IO.SYS
-rwxrwxrwx  1 root root          0 Jan 31  2012 MSDOS.SYS
drwxrwxrwx  1 root root          0 Oct 26  2011 MSOCache
-rwxrwxrwx  1 root root 3398328320 Oct 11 16:33 pagefile.sys
drwxrwxrwx  1 root root          0 Jul 13  2009 PerfLogs
drwxrwxrwx  1 root root       4096 Oct 11 16:40 ProgramData
drwxrwxrwx  1 root root      20480 Oct 11 13:17 Program Files
drwxrwxrwx  1 root root          0 Oct 26  2011 Recovery
drwxrwxrwx  1 root root          0 Sep 16 17:41 $Recycle.Bin
drwxrwxrwx  1 root root       4096 Jan 11  2012 System Volume Information
drwxrwxrwx  1 root root          0 Oct 11 16:37 Temp
drwxrwxrwx  1 root root          0 Sep 29 16:23 .Trash-1000
drwxrwxrwx  1 root root       4096 Dec  8  2011 Users
-rwxrwxrwx  1 root root    1442522 Nov  7  2007 VC_RED.cab
-rwxrwxrwx  1 root root       5686 Nov  7  2007 vcredist.bmp
-rwxrwxrwx  1 root root     232960 Nov  7  2007 VC_RED.MSI
drwxrwxrwx  1 root root      24576 Sep 16 18:16 Windows
todd@todd-Latitude-E6420:~$ sudo umount /mnt
todd@todd-Latitude-E6420:~$ sudo grub-mount /dev/sda2 /mnt
todd@todd-Latitude-E6420:~$ ls -la /mnt
ls: cannot access /mnt: Permission denied
todd@todd-Latitude-E6420:~$ sudo umount /mnt