mushy still is a bit up and down but for the last 2 years in ODIs he's averaged 30.33 in 31 innings (32 matches), for the last 3 years he's averaged 30.00 in ODIs, 57 innings, 60 matches and in the last 12 months he's averaged 29.23 in 15 innings, 15 matches. so he is reasonably consistent at least by BD standards.
in tests he's averaged 36.40 in 24 innings (12 matches) over the last 3 years. in the last 5 test matches, 10 innings he's averaged 37.77.
mushy has improved his averages dramatically from when he was first in the national team, you can't just quote his overall averages because they don't tell the true story of his consistency over the last few years.
All Time Test XI: 1 Hobbs 2 B.Richards 3 Bradman 4 Pollock 5 V.Richards 6 Sobers 7 Gilchrist 8 Procter 9 Miller 10 Marshall 11 Warne