The second down image shows
http://diverse.4mg.com/jason2+enso_overlay2.jpg
the overshoot end of 2016, artifact of the filter or whatever, no longer
present in that period of the J3 plot.
Also a graphical interpretation of shifting and comparing the ENSO plot.

Jason2 , some spot data as outputted 24 Apr 2017, up to Jan 19, 2017, as
in that above image
2016.5, 7.32cm
2016.75, 7.17
2016.997, 7.61
2017.052, 7.71

Jason3, revisiting the same period
2016.5, 7.13cm, -0.19
2016.75, 6.97 , -0.2
2016.997, 6.95, -0.66
2017.052, 6.86, -0.85
note the 2mm long-term apparent offset betwen J2
and J3

So curvefitting on J3 adjusted downwards for end of 2017, the same same
degree as end of 2016, nullifying the "recent" sharp upswing
Y= 2.211603 + 0.114799*x^1.324879
2030, 12.609cm
2050, 22.669cm
2100, 54.462cm

compared with
as-is without reducing the perhaps overshoot end of 2017
Y = 2.317755 + 0.089566*x^1.408787
2030 , 13.106cm
2050, 24.481cm
2100 , 61.164cm

So best guess projection to 2100 is between 54cm and 61cm global
sea-level rise. So little difference in the fis of the different
curve-types, maybe the next J3 output, the indicial curve will be
surplanted.