To be fair, at the time of the November 2015 trade the Padres had 23-year-old catcher Austin Hedges, whom Baseball Prospectus and MLB Prospect Watch had ranked No. 23 and No. 51 among prospects entering the 2015 season. Baseball America had ranked Hedges No. 27 the previous year. The 2011 draft saw Hedges taken with the No. 82 pick and Swihart with the No. 26 pick.
Hedges, who is four months younger than Swihart, has posted 0.4 bWAR and a negative 0.2 fWAR in 152 games since the Kimbrel trade while Swihart has posted 0.0 bWAR and a negative 0.2 fWAR in 37 games. Hedges entered this season with one year and 166 days of MLB service while Swihart had one year and 164 days of MLB service.
Compare their minor league lines:
AH 1621 PA, .270/.323/.433/.757
BS 1716 PA, .269/.328/.398/.727
Hedges has struggled with an OPS+ of 58 in 676 plate appearances at the MLB level while Swihart has posted an OPS+ of 86 in 411 plate appearances, including and OPS+ of 73 in 102 plate appearances since the start of the 2016 season.
ZiPS, Steamer and FanGraphs Depth Charts project rest-of-season wRC+ of 72, 67 and 70 for Hedges and 60, 69 and 64 for Swihart.
Hedges probably has a brighter future than Swihart because of his vastly superior defensive skills:
https://www.fanragsports.com/padres/pleskoff-scouting-report-austin-hedges/